128814868944 has 100 divisors (see below), whose sum is σ = 394758705924. Its totient is φ = 40412500992.

The previous prime is 128814868939. The next prime is 128814868967. The reversal of 128814868944 is 449868418821.

It can be written as a sum of positive squares in 2 ways, for example, as 117382982544 + 11431886400 = 342612^2 + 106920^2 .

It is a super-2 number, since 2×128814868944² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2901327 + ... + 2945390.

Almost surely, 2^128814868944 is an apocalyptic number.

It is an amenable number.

128814868944 is an abundant number, since it is smaller than the sum of its proper divisors (265943836980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128814868944 is a wasteful number, since it uses less digits than its factorization.

128814868944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5846754 (or 5846739 counting only the distinct ones).

The product of its digits is 28311552, while the sum is 63.

The spelling of 128814868944 in words is "one hundred twenty-eight billion, eight hundred fourteen million, eight hundred sixty-eight thousand, nine hundred forty-four".